Spiral Baffle System

Abstract

The present invention relates to a spiral baffle system that allows the pitch of spiral baffles installed at intervals along the longitudinal direction within a housing of a heating furnace to be adjusted during the mixing and heating process of materials to be treated that are fed into and transported within the housing of a heating furnace.

Description

[Technical Field]

[0001] The present invention claims the benefit of the filing date of Korean Patent Application No. 10-2022-0146755, filed with the Korean Intellectual Property Office on November 7, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a spiral baffle system for a heating furnace, which can adjust the pitch of spiral baffles installed at intervals along the longitudinal direction inside the housing during the mixing and heating process of powder fed into and transported inside the housing of the heating furnace. [Background technology]

[0003] Generally, a rotary kiln (hereinafter referred to as "heating furnace"), which is a type of heating furnace, is a rotating kiln with a cylindrical horizontal frame, in which powder (hereinafter referred to as "material to be treated") is mixed, heated, and transported by rotating an inclined cylinder.

[0004] Specifically, referring to FIG. 1, the heating furnace is formed in a cylindrical shape with an inlet 11 on one side of a housing 10 and an outlet 13 on the other side, and the other side of the housing 10 is arranged horizontally with the other side inclined downward at a predetermined angle.

[0005] The housing 10 rotates at a predetermined speed by the power of a motor, and the material to be treated that is fed through an inlet 11 on one side is transported along the downwardly inclined longitudinal direction by the rotation of the housing 10. The material to be treated that is being transported is heated by a heat source inside or outside the housing 10, and then discharged to the outside through an outlet 13 on the other side of the housing 10.

[0006] In this case, spiral baffles 20 are arranged on the inner circumferential surface of the housing 10 at regular intervals along the longitudinal direction of the housing 10. Such spiral baffles 20 allow the objects to be treated to be first-in, first-out in the housing 10 and also maintain an appropriate height of the objects to be treated.

[0007] However, in the conventional spiral baffle 20 used in a heating furnace, the longitudinal pitch of the housing 10 is welded and fixed via a plurality of fixing brackets 21. As a result, if the residence time of the material to be treated in the housing 10 is changed, the rotation speed of the housing 10 to reach the target residence time exceeds the usable range of the motor. If the pitch of the spiral baffle 20 needs to be changed to solve this problem, the welded portion of the fixing brackets 21 must be removed one by one, which can be time-consuming and costly. Summary of the Invention [Problem to be solved by the invention]

[0008] The present invention aims to solve the above problems and provides a spiral baffle system that allows the pitch of spiral baffles installed at intervals along the length of the housing to be adjusted during the mixing and heating process of materials fed into and transported inside the housing of a heating furnace. [Means for solving the problem]

[0009] To achieve the above object, the spiral baffle system for a heating furnace according to the present invention includes a spiral baffle that is connected to the inner surface of a hollow cylindrical heating furnace housing via a fixing bracket so as to mix and transport the materials to be treated, and a spacer that is detachably interposed between the connecting surfaces of the fixing bracket and the spiral baffle, has a predetermined thickness, and adjusts the pitch of the spiral baffle.

[0010] In this case, a plurality of spiral baffles are provided at predetermined intervals along the longitudinal direction of the housing.

[0011] Also, there may be a plurality of spacers, and they may have different thicknesses.

[0012] In addition, at least one spacer corresponding to the pitch set on the spiral baffle is configured to be selectively coupled among the plurality of spacers.

[0013] Additionally, a spacer is circumferentially coupled to one end of the spiral baffle.

[0014] The spacer may include a first body interposed between the fixing bracket and the spiral baffle, and having a first insertion hole formed therein that communicates with the fastening hole of the fixing bracket, and a second body disposed on the opposite side of the spiral baffle from the first body, and having a second insertion hole formed therein that communicates with the first insertion hole of the first body.

[0015] Furthermore, the opposing surfaces of the first body and the second body that come into surface contact with the spiral baffle are formed as inclined surfaces that correspond to the installation angle of the spiral baffle.

[0016] In addition, a contact member made of a soft synthetic resin material and having a predetermined thickness can be interposed between the opposing surfaces of the first body and the second body that come into surface contact with the spiral baffle.

[0017] The fixing bracket may further include a fastener that is sequentially fastened to the spiral baffle and the spacer through the fastening hole of the fixing bracket to fix the position of the spiral baffle. [Effects of the Invention]

[0018] The spiral baffle system for a heating furnace according to the present invention, configured as described above, can easily adjust the pitch of the spiral baffles installed at intervals along the longitudinal direction within the housing during the mixing and heating process of materials to be treated that are fed into and transported within the housing that constitutes the heating furnace.

[0019] In particular, when conditions change, such as when the residence time of the material to be treated in the housing is changed, the pitch of the spiral baffle can be adjusted to allow the material to reach the target residence time. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a side view showing the configuration of a conventional heating furnace. [Figure 2] 1 shows a partial cutaway perspective view of a furnace equipped with a spiral baffle system according to the present invention; [Figure 3] 1 shows a perspective view of a spiral baffle according to the present invention. [Figure 4] FIG. 1 shows an exploded perspective view of a spiral baffle system according to the present invention. [Figure 5] 1 shows a cross-sectional side view illustrating the coupling structure of a spiral baffle system according to the present invention. [Figure 6] 1 shows an exploded perspective view of a spacer according to the present invention; [Figure 7] 1(a) to 1(c) show phase diagrams in which the spacer according to the present invention is formed to various thicknesses. [Figure 8] 1(a) and 1(b) are side views showing spiral baffles according to the present invention set to different pitches. [Figure 9] FIG. 1 shows a cross-sectional side view of a spiral baffle system according to the present invention with a seal added. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, the construction and operation of specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0022] Here, when assigning reference symbols to the components in each drawing, it should be noted that the same components are represented by the same symbols as much as possible, even if they are displayed in different drawings.

[0023] FIG. 2 is a partial cutaway perspective view of a furnace equipped with a spiral baffle system according to the present invention, and FIG. 3 is a perspective view of a spiral baffle according to the present invention.

[0024] Referring to FIG. 2, the present invention relates to a spiral baffle system 100 installed in a housing 10 of a heating furnace 1 that mixes and heats materials that are fed and transported for processing, and the spiral baffle system 100 may include a spiral baffle 110 and a spacer 120.

[0025] For example, the housing 10 is formed in a hollow cylindrical shape. At the same time, the housing 10 is provided so as to be inclined downward at a predetermined angle toward the outlet 13 so that the material to be treated that is input through the inlet 11 on one side can be easily discharged through the outlet 13 on the other side.

[0026] The configuration of the present invention will be specifically described as follows.

[0027] First, the spiral baffle 110 is fixed to the inner circumferential surface of the housing 10 constituting the heating furnace 1 via fixing brackets 15 arranged radially around the central axis, and a plurality of such spiral baffles 110 are provided along the longitudinal direction of the housing 10 at predetermined intervals.

[0028] Specifically, referring to FIG. 3, the spiral baffle 110 is formed in a ring shape with at least one side open, and the open ends of the spiral baffle 110 are spaced apart at a predetermined pitch P along the longitudinal direction of the housing 10, so that the body of the spiral baffle 110 is formed in a spiral shape.

[0029] The spiral baffle 110 configured in this manner is detachably coupled to a plurality of radially arranged fixing brackets 15 via fasteners 130 (see FIG. 2) described below.

[0030] In this case, the spiral baffle 110 has a corresponding through hole 111 formed on its periphery, which is connected to the fastening hole 15a of the fixing bracket 15 so that the fastener 130 can be fastened thereto.

[0031] Meanwhile, a plurality of guide blades 17 are provided on the inner circumferential surface of the housing 10 at predetermined angular intervals based on the central axis. The guide blades 17 are arranged to intersect with each other along the longitudinal direction. This allows the materials M to be uniformly transported toward the discharge port 13 via the guide blades 17, and also prevents the transported materials M from being biased to one side.

[0032] 4, the spacer 120 can adjust the pitch P of the spiral baffle 110 to correspond to the changing residence time of the workpiece M during the treatment process of the workpiece M in the heating furnace 1. Such a spacer 120 can be detachably interposed between the joining surfaces of the fixing bracket 15 and the spiral baffle 110.

[0033] Furthermore, the spacer 120 is coupled to one end of the spiral baffle 110 in the circumferential direction. That is, by coupling the spacer 120 to one end of the spiral baffle 110, which extends spirally, the pitch P of the spiral baffle 110 can be easily changed.

[0034] In this case, various materials such as heat-resistant synthetic resins and metals can be used as the material of the spacer 120. Therefore, the present invention does not particularly limit the material of the spacer 120.

[0035] Specifically, referring to FIG. 5, the spacer 120 may include a first body 121 interposed between the fixing bracket 15 and the spiral baffle 110 and having a first insertion hole 121a formed therein that communicates with the fastening hole 15a of the fixing bracket 15, and a second body 123 disposed on the opposite side of the spiral baffle 110 from the first body 121 and having a second insertion hole 123a formed therein that communicates with the first insertion hole 121a of the first body 121.

[0036] Referring to FIG. 6, the opposing surfaces of the first body 121 and the second body 123 that come into surface contact with both sides of the spiral baffle 110 are formed as inclined surfaces corresponding to the installation angle of the spiral baffle 110.

[0037] A plurality of spacers 120 having different thicknesses are provided, and the spiral baffle 110 can be adjusted to a desired pitch P by selectively connecting at least one of the spacers 120 corresponding to the set pitch P of the spiral baffle 110.

[0038] 7, the spacer 120 is formed with a plurality of first bodies 121 and second bodies 123, each having a different thickness t of the first body 121. By selectively applying one of the plurality of first bodies 121 formed with different thicknesses t to the spiral baffle 110, the spiral baffle 110 can be adjusted to various pitches P1 and P2, as shown in FIG.

[0039] In this case, the spacer 120 may have a first body 121 whose thickness t gradually increases along the spiral direction of the spiral baffle 110, thereby making it possible to easily adjust the pitch P of the spiral baffle 110.

[0040] Referring to FIG. 9, a contact member 125 of a predetermined thickness can be interposed between the opposing surfaces of the first body 121 and the second body 123 that come into surface contact with the spiral baffle 110 to prevent the contact surfaces from lifting up.

[0041] In this case, the contact member 125 is formed to have a size corresponding to the first and second bodies 121 and 123. In addition, the contact member 125 is preferably made of a soft synthetic resin material so that it can be tightly attached between the opposing surfaces of the first and second bodies 121 and 123.

[0042] The fastener 130 secures the spacer 120 interposed between the fixed bracket 15 and the spiral baffle 110. As shown in the drawings, the fastener 130 is composed of a bolt 131 and a nut 133, or a structure in which the bolt 131 is threadedly fastened without a separate nut 133 may be applied. The present invention does not particularly limit the structure of the fastener 130.

[0043] The fastener 130 is sequentially fastened to the spiral baffle 110 and the first body 121, and then to the spacer 120 and the second body 123 through the fastening holes 15a of the fixing bracket 15, thereby firmly fixing the position of the spiral baffle 110.

[0044] The spiral baffle system 100 for a heating furnace according to the present invention, configured as described above, can easily adjust the pitch P of the spiral baffles 110 installed at intervals along the longitudinal direction within the housing 10 during the mixing and heating process of the material to be treated M that is introduced into and transported within the housing 10 that constitutes the heating furnace 1.

[0045] This allows the object to be treated M to reach the target residence time by adjusting the pitch P of the spiral baffle 110 when conditions change, such as when the residence time of the object to be treated M in the housing is changed.

[0046] Although the present invention has been illustrated and described above with reference to specific embodiments, it is of course possible for the present invention to be modified and altered in various ways without departing from the spirit and scope of the present invention. [Explanation of symbols]

[0047] 1: Heating furnace, M: Processing object 10: Housing, 11: Inlet 13: Outlet, 15: Fixing bracket 15a: Fastening hole, 100: Spiral baffle system 110: spiral baffle, P: pitch 120: Spacer, 121: First body 121a: first insertion hole, 123: second body 123a: second insertion hole, 125: contact device 130: Fastener

Claims

1. a spiral baffle connected to an inner circumferential surface of a housing of a hollow cylindrical heating furnace via a fixing bracket so as to mix and transport the materials to be treated; a spacer having a predetermined thickness and removably interposed between a joining surface of the fixed bracket and the spiral baffle to adjust the pitch of the spiral baffle.

2. The spiral baffle is 2. The variable pitch spiral baffle system of claim 1, wherein a plurality of the baffles are provided at predetermined intervals along the longitudinal direction of the housing.

3. The spacer is 10. The variable pitch helical baffle system of claim 1, wherein there are a plurality of baffles, each having a different thickness.

4. 4. The variable pitch spiral baffle system according to claim 3, wherein at least one of the plurality of spacers corresponding to a pitch set on the spiral baffle is selectively coupled.

5. The spacer is The variable pitch helical baffle system of claim 1 , wherein the helical baffle is circumferentially coupled to one end thereof.

6. The spacer is a first body interposed between the fixing bracket and the spiral baffle, the first body having a first insertion hole formed therein and communicating with a fastening hole of the fixing bracket; 2. The variable pitch spiral baffle system of claim 1, further comprising: a second body disposed on the opposite side of the spiral baffle from the first body, the second body having a second insertion hole formed therein that communicates with the first insertion hole of the first body.

7. The opposing surfaces of the first body and the second body that come into surface contact with the spiral baffle are 7. The variable pitch spiral baffle system of claim 6, wherein the spiral baffle is formed on an inclined surface corresponding to an installation angle of the spiral baffle.

8. Between the opposing surfaces of the first body and the second body that come into surface contact with the spiral baffle, 8. The variable pitch spiral baffle system according to claim 7, further comprising a contact member having a predetermined thickness and made of a soft synthetic resin material.

9. 2. The variable pitch spiral baffle system according to claim 1, further comprising a fastener that is sequentially fastened to the spiral baffle and the spacer through a fastening hole in the fixing bracket to fix the position of the spiral baffle.

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